Shuttle checking and releasing mechanism for looms



(No M'odel.) 4 SheetsSheet 1. 0. A. SAWYER 8v M. M. LAHUE. SHUTTLE UHEGKING AND RELEASING MBGHANI'SM FOR LOOMS.

No. 430,694. Patented June 24, 1890.

fri-E i o., mamma., mamma" n c (No Model.) 4 Sheets-Sheet 2.

J O. A. SAWYER & M. M. LAHUE.

SHUTTLE CHBGKING AND RBLEASING MBGHANISM FOR LOOMS.

Patented June 24, 1890.

wim/5885s (No Model.) 4 Sheets-Sheet 3. 0.'A. S'AWYER & M. M. LAHUB.

SHUTTLE GHBGKING AND RELEASING MEGHANISM FOR LOOMS.

No. 430,694. Patented June 24, 1890.

i IAN/gym? W/T/VESSES d lu/Attorney (No Model.)

' 4 sheetssheet 4. 0. A. SAWYER &M. M. LAHUB. SHUTTLE GHEGKING AND RELEASING MEGHANISM POR LOOMSI No. 430,694.

Patented June 24, 1890.

UNITED STATES PATENT OFFICE.

ORREN A. SAVYER AND MOSES M. LAHUE, OF LOWELL, MASSACHUSETTS.

SHUTTLE CHECKING AND RELEASING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 430,694, dated June 24, 1890.

Application filed September 1S, 1886. Serial No. 213,937. (No model.)

To @ZZ whom it may concern.-

Be it known that we, ORREN A. SAWYER and MosEs M. LAHUE, of Lowell, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Shuttle Checking and Releasing' Mechanisms for Looms, of which the following is a specification.

Our invention relates to looms for weaving; and it consists in certain new and useful constructions and combinations of the several parts thereof, substantially as herein after described and claimed.

In the drawings, Figure 1 is au end elevation of a portion of the frame and mechanism of a loom, showing our improvement. Fig. 2 is a portion of a front elevation of the same, with the cloth rollor beam removed and breast-beam broken away to show the construction of the parts relating to our invention more clearly. Fig. 3 is an enlarged perspective view of a portion of the lay-beam, showing the shuttle-box and shuttle therein and a portion of the picker-staff with the attached parts of our improvement applied. Fig. 4: is a side elevation of a portion of the loomframe shown in Fig. 1,provided with a modified form of our improvement. Fig. 5 is a detail view showing a modication of the yielding cam shown in Fig. 6, as hereinafter described. Fig. 6 is an end elevation of a portion of the loom-frame and parts shown in Fig. l, with a modified form of our improvement attached thereto. Fig. 7 is a frontelevation of Fig. 6.

Our improvement consists of a lever and cam mechanism attached to the lay and frame of the loom, operating to give the shuttlebinder a compression at the moment the shuttle is received in the shuttle-box, and to release it at the moment that the shuttle is thrown from the box, substantially as hereinafter described and claimed.

A is the frame of the loom.

B is the lay-beam, mounted upon arms b b, which are mounted at their lower ends on the reciprocating revolving rod b. The lay-beam is vibrated back and forth to beat up the weft by the ordinary cam mechanism connected to the links b2, attached to the arms l b on each side, as shown in Fig. l.

S S are the shuttle-boxes, mounted on each end of the lay-beam in the ordinary manner.

P P are the picker-staffs, vibrating back and forth in slots through the lay-beam and in the shuttl e-boxes to throw the shuttle through the shed in the usual way. They are pivoted" to the rod b. y

The shuttle-binder s forms one side of each shuttle-box, being pivoted at s by a vertical pivot in the usual manner, and capable of being moved inward toward the opposite side of the box to narrow the space which receives the shuttle or swung outward to widen it.

B is the breast-beam of the loom, and B2 is the roller on which the cloth is wound.

All of these parts are o ld and in common use, and will be readily understood without further description.

To one side of each shuttle-box we attach a bent arm c', which, curving upward and over the shuttle-box above the path of the shuttle, carries pivoted to its outer end the dependent lever c', which hangs down past the shuttlebinder on the opposite side of the shuttleboX, and has upon ita projection in the form of a finger c2, which bears against the outer face of the binder, as shown in Figs. l, 2, and 3. v

To the side of the frame A we attach a bracket or ear d, and upon this we attach the elastic rod or arm cl, carrying on its upper` surface the cam-shaped enlargement or projection d2, underneath the path of the lower end of lever c. The screw which is usedto secure the arm d and cam cl2 to the stud d passes downward through a hole in the strip elongated longitudinally thereof, so as to allow the cam to be set or adjusted at different point-s beneath the lay, as desired, before the screw is set up. The lower end of the dependent lever c is provided with a roller c3,

pivoted in a bifurcation therein, so as to roll' across the face of cam d2 to prevent undue friction; but this roller can be dispensed with and the lower end of the lever made to bear directly upon the cam, if desired, especially when a heavy shuttle is used on a broad loom. The cam cl2 is shown as so placed that the lower end of lever c will impinge against it on the side nearest the breast-beam during the last part of the movement of the lay in one direction-'. e., from the breast-beamthus releasing the shuttle-binder from com- ICO pression; but this is the moment when the shuttle is thrown by the picker-staff, and the shuttle therefore leaves the shuttle boX freely. During the first part of the return movement of the lay in the other directionil. e., toward the breast-beamthe lower end of lever c impinges upon the opposite side of cam (l2 and presses the finger c2 against the binder s; but this is the moment when the shuttle is `received in the shuttle-box as it is thrown through the shed, and the force of the shuttle is therefore checked by the compression of the binder, which expands outward harder and harder as the shuttle forces its way into the box, because it moves the lower end of lever c upon the higher part of cam cl2 as it expands. This nipping of the shuttle by the binder should, as above stated, occur at the moment when the shuttle is received into the shuttle-box, and while it is passing through the same. The binder in this action does not tend to prevent the shuttle entering the box, but arrests it after it has entered and while it is moving through the same, thus acting the same on shuttles thrown with varying force. By varying the inclination of cam d2 and the stiffness of its elastic arm d any desired increase of this nipping tension may be had which is desired. The continued movement of the lay toward the breast-beam also contributes to increase the pressure upon 'or nip the shuttle in its box, thus applying it by degrees, so to speak, and preventing breakages by too sudden stoppage of the shuttle. It is not necessary that the spring which allows of the yielding` pressure on the shuttlebinder should be attached to the cam, but it may be located so as to allow some part of the mechanism between the cam and the binder to have the necessary elasticity, as illustrated by Fig. 4. For instance, as shown inV Fig. 4, the cam d2 may be fixed directly to the frame by bolts and slots, as shown, and the lever c maybe made thin and elastic, as shown, so as to yield and allow it to pass over the cam, or with the cam so made non-elastic the mechanism shown in Fig. 3 may be employed, with the arm c2 made of elastic material to allow of such yielding to the cani and create a spring-pressure upon the binder. The cam shown in Fig. 4: may also be used in place of that shown in Fig. l, if desired, and the shuttle be nipped by a positive movement, in-

creasing in intensity with the progress of the lever c over the cam, as before described. The position of the opposite faces of the cam d2 in alternately withdrawing and applying the pressure of the finger c2 to the shuttlebinder momentarily during the backward and return stroke of the lay-beam is of importance, because this construction of the parts avoids friction and enables the lay to move with greatspeed and the weaving to proceed faster, as the lay makes almost or quite a half-beat to and fro while the shuttle passes across from one box to the other, and is properly released and nipped in the box,

as described, after it has entered the same. This construction also allows the arm c and finger c2 to press lightly against the shuttlebiuder s at all times, except when the saine is momentarily withdrawn from or forced against the binder by the motion of the cam, and this prevents the shuttle from flying out of its box, while permitting it to be removed and replaced by hand therein at every other part of the movement of the lay at which the loom may happen to be stopped. It will also be observed that the shuttle-binder is formed curved on its inner face, so as to wedge against the entire side of the shuttle and present increasing resistance, with a large bearing-sun face upon the shuttle as' it advances farther 1 into the box.

from the ordinary protection-rod mechanism,

which is constructed to bear upon the shuttle or the side of the shuttle-box after the shuttle is lodged in the same, and by continuously bearing thereon during the beat-up of the lay, hold the dagger out of the way of its stop until released upon the back-stroke of the lay, because such mechanism can only act after the shuttle is lodged in its box, and must continue to act while the beat-up is being accomplished to eifect its purpose of guarding against smashes of the warp in case the shuttle is lodged therein.

In Figs. 6 and 7 is shown amodiiication, in which the lever c is made fast to the protection-rod b4, which is attached by bearings, in which it turns, to the lay-beam in the usual way, the lever projecting upward past the shuttle-box and impinging against the cam d2, which is inverted, on the arm d. The tingcrs c2 c2 are made fast to the same protection-rod and press upon the shuttle-binders as before.` The arm d is elastic and at the end fast to the loom-frame is attached by the stud d".

Fig. 5 shows a modification of the cam d2 and elastic arm cl', the cam being made in two parts d d, joined to the arm, made in two parts d7 C17. It will be seen that with this construction when the lever c in moving one way strikes the outer face of the cam first it only has to overcome the tensionvof one of the parts of the elastic arm d until it reaches the other part of the cam, when it must suddenly overcome the other part also, thus doubling the resistance at that point to the further expansion of the shuttle-binder, and bringing the shuttle to rest after it has been partly checked bythe first portion of the'cam. The form of spring arm and cam here shown is to be used in place of the one shown in Figs. 6 and '7. It is secured to the frame by screw-bolts n n and set-screws n n', passing through a ange a2 of the frame. By loosening and tightening the screw-bolts n n alternately and setting up the set-screws 'n' n the cam may be adjusted higher or lower in the path of the lever c.

IOO

IIO

What we claim as new and of our invention isl. The combination of the vibrating laybeam B, the shuttle-box S, mounted thereon, having one side formed of the movable shuttle-binder s, the lever c and fin ger c2, pivoted 4to ride over it, substantially as described.

2. The combination ot' the vibrating' laybeam B, the shuttle-box S, mounted thereon, having one side formed-of the movable shuttle-binder S, the lever c and finger c2, pivoted to the lay-beam and adapted to be pressed against the shuttle-binder, and the cam d2, attached to the loom-frame and located at that point in the forward path of the lever and lay-beam atwhich the shuttle is entering its box and is moving into the same, and arranged tov nip and check the shuttle in its box while so entering by its impingement against the lower end of said lever, and to allow the latter thereafter to ride over it, substantially as described.

3. The combination of the vibrating laybeam B, the shuttle-box S, mounted thereon, having one side formed of the movable shuttle-binder s, the lever c and finger c2, pivoted to the lay-beam and adapted to be pressed against the shuttle-binder, and the cam cl2, attached yupon an elastic arm to the loomframe at that point in the forward path of the lever and lay-beam at which the shuttle is entering its box and is moving into the same,

and arranged to nip and check the shuttle in its box while so entering` by its impingement against the lower end of said lever, and to a1- low the latter thereafter to ride overit, substantially as described. n

4. The combination of the vibrating laybeam B, the shuttle-box S, mounted thereon, having one side formed of the movable' shuttle-binder s, the lever c and finger c2,pivoted to the lay-beam and adapted to be pressed against the shuttle-binder, and its cam d2, attached to the frame, said lever and cam being adapted to impinge against each other with an elastic pressure, and the lever arranged to ride over the cam, located to bring said pressure upon the shuttle-binder and nip the shuttle while entering the box, substantially as described.

5. The combination of the vibrating laybeam B, two shuttle-boxes mounted at opposite ends thereof, having, respectively, one side formed by the movable shuttle-binder s, the oscillating rod b", mounted on said lay-beam and carrying linger parts c2 c2, fixed thereto and arranged to be withdrawn from and to press against said binders, the lever c', fixed radially to the rod, and the cam d2, attached upon the frame in the path of the end ot the lever and arranged to allow the latter to ride over it and release the shuttle as it leaves one shuttle-box on the back-stroke of the lay at the moment when the shuttle is thrown from its box, and to ride over it and nip the shuttle at the moment when it enters into the other shuttle-box after passing through the shed, substantially as described.

ORREN A. SAWYER. MOISES M. LAHUE. 

